Post binder



9, 1945- F. s SCHADE 2,366,933

' POST BINDER Filed Dec. 27, 194;

7 INVENTOR FFAIVfJfA/VLL'YJC/MDB TTORN YS Fig.1; and

Patented Jan. 9,"

i UNITED ESTATES PATENT OFFICE, l 2,366,933 r P0sT BINDER Frank Stanley Schad, HolyokeQMass assignor l to National. Blank Book Company, Holyoke,

, .Mass., acorporation of Massachusetts Application December27, 1943, Serial No. 515,691

.6 Clams. rei ns-+12) invention relates to improvements in the construction of looseleafor post binders. As is well understood, these binders are constructed of a pair of cover portions, atleast one of which is provided with a hinge and with a,c1amp device by which it can be held in adjusted position upon" posts secured to theother member. It is the object of the presentjinvention to improve upon prior constructions in'increasing the degree of fiexibilityof the hinge, distributing the hinge action over a largerarea, and ,greatlysimplifying -and cheapenirrg the nature of thehinge construction.

Referring to the drawing, 1

Fig. .1 is .a fragmentary plan of the adjustable member of the post binder;

Fig. 2 is an enlarged section on line 2-2 of Figs. 3 and4 are respectively end and top views of a plug closure for the adjustable member.

The body of one of the cover members has been :shown at l in section and without detail since the specific construction of the interior of the cover is immaterial to the present invention. A fabric cover Zis adhesively secured to the body I, extends beyond this bodyportionat one side through a hinge portion 3, around a bead 4, preferably formed of metallic Wire, and returns through the hingeportion 3 so as to form the bottom facing 5 of the cover I. The two layers of the fabric at 3 are preferably adhesively secured together and the length of the free portion of fabric forming the hinge is preferably'made great enough so that the hinge action will not be restricted to any particularline but may be dis.

tributed over a comparatively wide area of the fabric. The bottom cover'member 6 may be constructed in a similar manner to form a hinge, or in some instance where a hinge is not necessary in the bottom cover member other types of construction ,may be used. In the example shown, the bottom cover member has a hinge I provided with a bead 8 and constructed as deber l l is located on that side of the hinge toward which no hinge action will occur or, in other hinge portion by reasonof repeated flexing along the cover it is preferable to' expand the tube venting the latter from sliding rearwardly into words, the interior of the cover. The bead 12 serves to permit a rollingaction of theflexible hinge 3, constantly changing the fold line of the hinge and avoiding danger of breakage of the a definiteline,

The post construction may be varied as desired sincein itself it forms no part of the present invention. Asshown, the lower channel II] has a post l3 arising from it and held as by a plug l4 having a hole in whichthe endof the postmay be received and held either by friction orby the useof a, suitable adhesive. The upper member carries post locking mechanism which has been indicate-d generally at l5 and which may be constructed as described in detail in the patent to John Schade 2,211,517, August 13, 1940. A further description of that mechanism is unnecessary here.

In order to avoid complexity in theconstruction of thetube members, they are preferably left open at the ends, the ends being later closed by plugs shown in Figs. 3 and 4 having a head portion I6 of the same contour as that of the outside of the tube and an extending portion I'l adapted to enter into the end of the tube member and be retained there as by a pin or screw 18. In assembling or disassembling a tube member from somewhat at one end as by forcing a tapered plug into it. This moves the jaws II and I2 slightly apart and permits the hinge portion 3 to be slid between them with one end of the bead 4 lying behind the jaws. The tapered plug can then be removed whereupon the hinge will be clamped tightly between the jaws in such a way that it cannot be removed except by the use of a considerable sliding force or the deliberate expansion of the tube. The hinge is further sealed in position by the plug members I! which overlap the ends of the jaws and are held by pins 18. 'Ihe plugs 11 preferably extend far enough into the tubes so as to lie back of the beads, therebyprethe tubes.

It will be seen that as compared with the hinge construction shown in the John Schade patent referred to above, the present construction is of much greater simplicity and has'a range of hinge action limited only by the contact of the cover with the ends of post l3. Furthermore the tube members can be readily removed whenever it i desired for the repair or the replacement of the of said extension, at least one of saidzjaws being substantially cylindrical to provide a rolling-i111 crum for said flexible extension. l

3. Aloose leaf binder comprising a covenbody, a flexible covering for said body extending beyond the cover body at one edge thereof and enclosing a b a wres e na o aid-extension, anda hann ha d bi de -=fi ii cl in s r n aw n l sin saidx ns oned cent h h a o he. pur ose at conn tin h cover ill im n i v remo ble ma ne 4. A loose leaf binder comprising a ,coverbody, a flexible covering iorisaidbody veiitgr' oling beyond th -co e bo va one ed e h o and. encl ing a ead orehee-de o said z i qm a d a cha ha d binde tube ha n -jaws nc osing said extension adj acentthe bead, at least one of said jaws being substantially cy ndrical taproid -a te in cru i rsaid x le e on.-

5. A post binder comprising a cover body, a

flexible covering for said body extendingbeyond the cover bodyvat one edge thereof and enclosing a bead core at the edge of said extension, and a channel-shaped binder tube having jaws enclosing said extension adjacent the bead, at least one of said jaws being substantially cylindrical to provide a rolling fulcrum for said flexible extension, and plugs closing tl e end s of the channelshaped member.

6. A post binder having a, cover member pro- -vided with posts, a second cover member provided withmeans for adjustably engaging said posts, at least one of'said cover members having a body,

aine-xible. coyeringsa'dherently secui'ed to one face 0f: said'body and extending beyond it at one edge to'form a flexible-extension and bent reversely at ;the en d of saidgle xible extension and adherently secured to the second face of said body, a bead coreenclosed by the reverse bend of said flexible coveringt orm ahead at the a d 9? seisk s b extension, I, a, channel shaped binder tube of re.- il ent maier lhgx nat a las c Flee channe en i wardl 1: en a the; gentl sn s in be ond said beads the ns d sur ac bstanti ll right angles t oi the govern being he. la of sa d nez tole-er ens e nd. the 12129- i s. w ein .i n ee ty dg pa tia o fin ch nne ort o t lled. i w ts i tq ubstan ial cylindr aLiwm to pm ii i i r saidnexible extensi n ige'fiile miffe 

